Carbon binder



J, QUARTZ CARBON BINDER Dec. 3,4 1929.

Filed April 29. 1927 Patented Dec. 3, 1929 JAMES QUARTZ, OF NEWTON, MASSACHUSETTS,

ASSIGNOR T0 F. S. WEBSTER COMPANY,

0F BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS CARBON BINDER Application mea April 29,

This invention relates to carbon binders.

It has been common to bind together any desired number of sheets of carbon paper by a backing paper so as to maintain the sheets of carbon paper in correct position and prevent, to a large extent, their injury by wrinkling, folding or scraping. Such a scheme is shown in Patent No. 683,782, dated October l, 1901, to Morland.

Withsuch binders, however, it is impossible to correct errors until the paper has been removed from the machine as the rubbing of an error from the outside or ribbon sheet will smudge the other'sheets.

If errors are not corrected until the sheets are removed, the sheets cannot be relied on as true copies as the correction may not be made or may be differently made on the carbon and the changes take more time owing to the necessity of replacing the sheets accurately and the changes are much more noticeable.

For the above and other reasons in many offices where accuracy is important, carbon binders have not been used solely because of the impossibility of making corrections while the paper is in the machine.

I have invented a pack of carbon sheets and binder which, if used in the method herein set forth, will have the advantages of-other binders and yet permit corrections to be made on the ribbon and carbon sheets Without removing them from the machine.

Fig. 1 is a perspective view of the binder embodying the invention.

Fig'. 2 is a section taken along line 2-2 of F ig. 1.

Fig. 3'is a view similar to Fig. 2 but with paper sheets interposed between the carbon sheets.

Fig. 4 is a plan view of a modification of the binder.

Fig. 5 is a perspective detail illustrating a modified manner of attaching the backing and carbon sheets.

Fig. 6 is a perspective detail illustrating the method of using the binder in a typewriter.

The binder embodyingI this invention comprises any number of carbon sheets l0 which are bound together by a backing sheet l2 bent 1927. Serial No. 187,652.

over a margin of sheets and entirely covering the carbon sheets both front and back except where the backing may be cut away at 14, Fig. 4, to allow the escape of air frombetween the sheets as the binder is rolled on the platen of a typewriter. The carbon sheet may be stitched so as to leave a `slight margin between the car-bon andthe bend as inFigs. 4 and 5 or close up to the bend.

The backing and carbon sheets are fastened together at one margin, preferably by a line of stitching 16. The backing sheet 12 may be bent over the length of the carbons as here shown or over the width, but the backing should be bent over the'end which is to be parallel to the line of writing except on flat platen machines as to binding is possible.

A sheet of Japanese vellum or other suitable protective sheet is very satisfactory as a backing sheet and the sheet may be vellum on the front and other material on the back, or vice versa. The line of stitching may be passed through both faces of the backing sheet, as in Figs. 1 and 2, or through the carbon sheet and the back face only, as in Fig. 5.

The use of a backing sheet covering both sides of the paper is an advantage in itself as it is a protection to the carbons from the blow of the type and from dust and injury when not in use.

In operation the pack is fed into the machine, loose ends first, as illustrated in Fig. 6, and in consequence the sheets may be separated for corrections and paper placedbewhich either top or side tween the carbons andthe paper on which the writing is made to prevent smudging in the usual way when bound carbon packs are not used and which is impossible when the bound end is fed through the machine first.

My invention consists thereforel both in the pack made as herein described and in the method herein described of using it. I have shown the invention applied to one form of pack but many specially arranged packs may be made which involve my invention.

I claim:

1. A carbon binder consisting of a sheet of backing paper folded to form a substantially equal back and front, one or more sheets of superposed carbon paper enclosedl Within said sheets and a row of stitching extending across and through the backing paper and enclosed carbon sheets substantially parallel to the fold therein to bind the carbon sheets and backing paper together the aforesaid back and front being substantially co-extensive with the carbon sheets.

2. A. carbon binder having one or more rectangular sheets of superposed carbon paper completely inclosed on the front and back by a backing sheet folded about the same, said carbon paper and backing paper being fastened together by a line of stitching parallel and close to the folded end of said backing sheet and the front and back being substantially co-extensive with said carbon paper and being free from projections and presenting no obstacle to the passage of the entire binder around the platen of a typewriter y When the binder is fed in With the free edge foremost. v

3. A carbon binder having one or more rectangular sheets of superposed carbon paper completely inclosed on the front and back by a backing sheet folded about the same, said carbon paper and backing paper being fastened together by a line of stitching parallel and close to the folded end of said backing sheet and the front and back being substantially (5o-extensive with said carbon paper and being free from projections and presenting no obstacle to the passage of the entire binder around the platen of a type- Writer in either direction.

4. A carbon binder having one or more sheets of superposed carbon paper completely inclosed on 'the front and back by a backing sheet of protective material folded about the same, said carbon paper and sheet being fastened together at a point near the folded end by a line of fastening parallel to the fold passing through at least one side of the folded backing sheet and the front and back being substantially co-extensive with said carbon paper and .being free from projections and presenting no obstacle to the passage of the entire binder through the typewriter in either direction.

5. A carbon binder having one or more sheets of super-posed carbon paper completely inclosed on the front and back by a backing sheet of protect-ive material folded about the same, said carbon paper and sheet being fastened together at a point near the folded end by a line of fastening parallel to the fold passing through the back face of the folded backing sheet and the front and back being substantially cofextensive with said carbon paper free from projections and presenting no obstacle to the passage of the entire binder through the typewriter in either direction.

In testimony -whereof, I have signed my name to this specification.

JAMES QUARTZ.v 

